Energy and Work.  Formulas:  W = Fd ▪ Units of work are the joule (J)

Slides:



Advertisements
Similar presentations
Work Work is done only when a force moves an object.
Advertisements

Work and Kinetic Energy
Work, Potential Energy, Kinetic Energy & Power
Reading Quiz A cannonball is dropped from a tower. As it falls,
Dr. Jie Zou PHY 1151G Department of Physics1 Chapter 7 Work and Kinetic Energy (Continued)
Dr. Jie Zou PHY 1151G Department of Physics1 Chapter 7 Work and Kinetic Energy (Continued)
Work, Energy, and Power Chapter 4. Work WORK = the use of force to move an object a certain distance. You do work ONLY when you exert a force on an object.
A force that causes a Displacement of an object does Work on that object.
Aim: What are Potential and Kinetic Energy? Do Now: A girl lifts a 10 kg object 1.5 m straight up. How much work has she done? W = Fd W = F g d W = (10.
IGCSE Coordinate Science 1 P3: Energy, Work, and Power Unit 7 – part 1.
Physics Chp 5. Work is done when a force acts to displace an object. Units are Nm which is also J W = Fd but the force and displacement have to be parallel.
Physics 3.3. Work WWWWork is defined as Force in the direction of motion x the distance moved. WWWWork is also defined as the change in total.
Work and Energy.
Energy, Work and Simple Machines
Kinetic Energy Conner Middle School 8 th Grade Science.
Energy and work Sections 12, 13, 14 and 15
A force that causes a Displacement of an object does Work on that object.
Work has a specific definition in physics. Work is done anytime a force is applied through a distance.
Work, Kinetic Energy, and Power. v f 2 = v i 2 + 2ad and F = ma v f 2 -v i 2 = 2ad and F/m = a v f 2 -v i 2 = 2(F/m)d Fd = ½ mv f 2 – ½ mv i 2 Fd = Work.
Work When a force acts on an object and the object moves a parallel distance.
Physics 221 Chapter 7 Problem 1... Work for slackers! WORK = Force x Distance W = F. D Units: Nm = J Newton meters = Joules Problem 1 : You push a car.
The Work-Energy Theorem Physics 6(A). Learning Objectives Explain how work is done on an object Describe the relationship between the work done on an.
Work.
Aim: How can we solve problems dealing with kinetic energy?
Le WORK AND ENERGY Show!!!. Work is defined as a force that moves through a distance. The equation used to calculate work is: W=f d If the 60kg cart is.
Last lesson  Learn what “work” is!  Learn how to calculate work  See who can do the most work!  Power.
Work and Kinetic Energy. What is kinetic energy?  If an object is moving, it has energy. You can think of kinetic energy as the energy of motion, and.
1 Stored Energy Energy of Position Working Energy Energy of Motion.
Kinetic Energy and Work. Energy Loosely defined as the ability to do work There are many types of energy, but the total energy of a system always remains.
Work F d . Work is a Bridge to Energy Land of Forces & Motion Land of Energy WORK Conceptual Bridge PE = mgh KE = ½mv 2 F resistance F forward F ground-on-car.
K INETIC E NERGY AND W ORK. E NERGY Loosely defined as the ability to do work There are many types of energy, but the total energy of a system always.
Work-Energy Theorem Work : W net = F net d However, we know F net = ma So work gives an object some acceleration Acceleration means the velocity changes.
Work Kinetic Energy Work – Energy Theorem Gravitational Potential Energy Mechanical Energy Conservation of Energy Work Kinetic Energy Work – Energy Theorem.
Chapter 5 Work and Energy. Mechanical Energy  Mechanical Energy is the energy that an object has due to its motion or its position.  Two kinds of mechanical.
ICP “Work, Energy and Momentum”. NGSS HS-PS3-1 Create a computational model to calculate the change in the energy of one component in a system when the.
Energy and Work Section 10.1 Physics. Objectives Describe the relationship btwn work and energy. Display an ability to calculate work done by a force.
Calculating Work. Work = force x distance W=f x d Unit of Measurement for Work is Joules Unit of Measurement for Force is Newtons Unit of Measurement.
Vocabulary Work Problems Potential Energy Problems Kinetic Energy Problems Extra Questions
Aim: How can we apply work- energy to motion problems? Do Now: In your own words, what does energy mean to you? In your own words, what does energy mean.
Work, Power, and Energy. WORK  In Physics, work has a very specific definition.  This is not work in Physics.
Work, Power and Kinetic Energy. Work Work is a force acting through a distance In order for work to be done: –The object the force is applied to must.
In this section you will use the equation to calculate work done use the equation to calculate kinetic energy solve simple energy interchange problems.
Work F The force, F, pushes the box for a short distance. This causes the box to start moving!!!!!! I just don’t have any energy  Whoa!!! Now I do!!!
Doing work.
Energy Variables Or Energize Me! Standards:
Conceptual Physics DOUBLE JEOPARDY Mechanics.
Chapter 6 (C&J) Chapter 10(Glencoe)
Work, Energy & Power.
Work Provides a link between force and energy
Work, Power Problems Answers
Work and Power Quiz Solutions
Work Physics Ms. Li.
Work Whoa!!! Now I do!!!  I just don’t have any energy 
Work and Energy.
Work, Power & Energy.
Unit 10 Work, Power, & Energy.
Chapter 10: Energy and Work
Work.
Work and Energy.
The beauty of this is that they are all the same thing.
WORK AND ENERGY CHAPTER 8.
6.1 Work Work is done when a force is applied to an object and the object moves in the direction of the applied force.
Work.
GRAVITATIONAL POTENTIAL & KINETIC ENERGY
Objectives Define work in terms of energy.
Work and Energy.
Mechanical Energy.
Physical Science Chapter 5
ATB - Work Review How much Work is done in lifting a 5 N book 3 meters? How much Work is done in carrying that same book up a flight of stairs that are.
GIG Read the passage and mark your answers on your whiteboard. NOT ON THE PAPER. Question or
Presentation transcript:

Energy and Work

 Formulas:  W = Fd ▪ Units of work are the joule (J)

 W = Fdcosθ ▪ Use this formula if the object moves horizontally and you are given an angle ▪ Calculator must be in degree mode! ▪ Plug in the angle for θ

 W = Fdsinθ ▪ Use this formula if the object moves vertically and you are given an angle ▪ Calculator must be in degree mode! ▪ Plug in the angle for θ

 KE = ½ mv 2  Looking at this formula, what accounts for most of the kinetic energy?

 ΔK = W  The _______ in kinetic energy equals work; and the amount of work done represents the _______________in kinetic energy.

 Example problem 1  A student lifts a box of books that weighs 185 N. The box is lifted m. How much work did the student do?

 List all variables:  185 N is a _____________  m is a ___________  We’re solving for work… so W = ?

 F = 185 N  d = m  W = ?

 Example problem 2  A 0.18 kg ball falls a distance of 2.5 m. How much work does the force of gravity do on the ball?

 m = 0.18 kg  d = 2.5 m  W = ? You need force and distance to find work, right? Do you have them?

 Use F = ma to solve for force, then use force and distance to find work

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2025 SlidePlayer.com Inc. All rights reserved.